Crown setting device for a timepiece

Details Crown setting device for a timepiece Crown setting device for a timepiece

1996-05-21

1998-04-21

Roskoski, Bernard

Horology: time measuring systems or devices

Regulating means

For setting

368319, G04B 2702

Patent

active

057425655

ABSTRACT:
Crown setting device for an alarm setting crown and/or a time setting crown in an analog wristwatch uses a rotatable top ring mounted on the watch case, having gear teeth on its underside which mesh with gear teeth on the crown(s) to rotate the crown(s). This serves to set the time and/or alarms with less time and effort than conventional crown setting. Preferably involute gear teeth are used, but a simple version employs the conventional crown knurling as "teeth".

REFERENCES:
patent: 2547140 (1951-04-01), Schmitz
patent: 4253177 (1981-02-01), Hafner
patent: 5083300 (1992-01-01), Schwartz
patent: 5305291 (1994-04-01), Kamens et al.

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